Ahobew b



(No model. r 2 sheets-sheet '1.

. V.- BERGMANN;

WIRE DRAWING MACHINE.

No. 549,051. Patented-00329,; 1895.

(No Model.) 2 Sheets-Sheet 2.

- V BERGMANN WIRE DRAWING MACHINE.

No. 549,051. Patented 001;. 29, 1895.

AN DREW B.GRAHAMPNbTO-UTNQWASHING'IDNJ C,

UNITED STATES ATENT nricn.

"WIRE-DRAWING MACHINE.

SPECIFICATION forming part of Letters Patent No. 549,051, dated October29, 1895.

Application filed March 1,1896. Serial No. 540,246. (No model.)

To aZZ whom it may concern.-

Be it known that I, VALENTIN BERGMANN, merchant, residing at Feistritz,in the Duchy of Karnten, Austria-Hungary, have invented a new and usefulImproved Wire-Drawing Machine, of which the following is aspecification, reference being had therein to the accompanying drawings.

This invention is an improvement in wire drawing and winding machines;and it consists in the improved stop mechanism for winding-drums and intheimproved construction of the drawing or tightening rollers. Itsobjects are to provide an automatic stop mechanism for the winding-drumsto prevent the wire breaking or snapping off, and also to prevent thedrawing or tightening rollers from being cut.

In order that my invention may be clearly understood and more easilycarried into practice, I have appended the accompanying sheets ofdrawings, which illustrate one mode of carrying the invention intopractice.

Figure 1 is a side view of a complete wiredrawing machine; Fig. 2, aplan view thereof; Fig. 3, a vertical section on linemc of Fig. 1; Fig.4, a vertical section on line y y of Fig. 1; Fig. 5, a detail drawn onan enlarged scale.

The stop mechanism stops the windingdrum before the wire snaps, should aknot form in the wire when it is being coiled on the reel, so that bythe use of such mechanism the principal causes of the tearing orbreaking of the wire are fully obviated.

f is the Winding-drum; f',its supporting shaft, on which is keyed pulleyc.

a is the main shaft, on which are keyed the drawing-roll b and pulley c.

c is a bath-box,in which are a series of glass guide pulleys h, mountedon a shaft.

k are the draw-plates; g, the reel on which the wire to be drawn isplaced.

Motion is imparted to the winding-drum f from the driving-shaft a. by arope passing over pulleys c c'.

The wire D as it leaves reel g passes over the first pulley h andthrough the first drawplate is to a guide roller b, to and over thedrawing-roller b, and back by another guideroller 1) to and around thesecond pulley h in trough 1', through the next draw-plate k, then overthe neXtguide-rollerb, drawing-roller b, and roller h, &c.,in order tobe passed again through the bath in trough 2', &c. In this manner thewire is alternately passed through the bath and around the draw-roller anumber of times equal to that of the draw-plates in use and finally ledover roller r through reed s and wound on the winding-drum.

The winding-drumfis loosely mounted on shaftf and is detachably coupledthereto ordinarily by a pinl, mounted in abracket-arm Z, secured toshaftf below the drum, said pin being normally pressed up intoengagement with a socketf in the bottom of the drum by a movable platem, arranged below the drum and resting upon studs n on the top plates ofthe machine. Plate m is connected by a cord 19, passing over rollers c,with a sheave q, through which the wire is passed immediately after itsrunning off the reel g, this wire, however, being once more passedaround the reel before it reaches the first glass pulley h. (See Figs. 1and 2.) Should a knot be found in the wire or should the wire becomeentangled on the reel, the sheave q, and hence the cord 19, are drawntoward the reel g, thereby drawing plate m as soon as this pullovercomes the tension of the spring m, which constantly draws the platem in the position shown in Fig. 2, to one side until the studsn enterslots m in the plate, whereupon the latter drops down, and the pin 5,being unsupported, is thrown out of engagement with socketf by thespring Z and the drum will be thus stopped before the tension on thewire has increased to such an extent as to cause it to break.

If desired, a piece of india-rubber can be arranged at the inner side ofthe trough in position to wipe the wire as it comes from the trough andbrush the liquid adhering thereto back into the trough. Thus the wirewill be clean and dry when it reaches the draw-plates and will appearmore highly finished.

To prevent the drawing-roller b being cut by by wire, it is made of theshape shownin Figs. 2 and 3-that is, it is constructed as a steppedcone-pulley, with a number of steps u come sponding to the number ofdraw-plates required. Each step u, moreover, is slightly tapered, sothat its diameter is less at the side toward the largest end of thecone-pulley. The wire is led to the largest diameter of a step andslides, while running one or more times around the same, laterally overthe surface of the step until it reaches the point whence it can pass tothe next roller h. In this manner the various steps are uniformly actedupon in all parts of their periphery, and thus the risk of their beingcut by the wire is fully obviated. The guiding-rollers b are so arrangedthat the running edge of each of the latter is in the plane of thelargest diameter of the relative step a. These rollers are carried by acommon frame 19 The relative proportions of the various steps are suchthat the wire which is stretched an additional given length at eachdraw-plate is coiled on a step which has a correspondingly greaterperiphery.

WVhat I claim, and desire to secure by Letters Patent, is-

1. In a wire drawing machine, the combination of wire drawing mechanism,a drum upon which the finished wire is wound, loosely, mounted on arotating shaft, and a clutch device whereby said drum can be disengagedfrom the shaft; with a movable guide for the wire, and flexibleconnections between said guide and the clutch controlling device wherebythe clutch will disengage the drum from the shaft and allow the latterto stop if the wire kinks or catches in the guide, substantially asdescribed.

2. The combination in a wire drawing machine, of a reel, a draw-plate,adrawing roller, and a winding drum; a shaft for rotating said drum, anda clutch for engaging or disengaging it from the shaft; with a guide forthe wire, and connections between said guide and clutch, wherebytheclutch is disengaged if the wire catches in the guide, substantially asand for the purpose described.

3. In a wire drawing machine the combination of the reel, the drawplates, the drawing roller, the winding drum, its driving shaft, thebolt for locking the shaft to the drum, and the plate for upholding saidbolt, with the guide for the wire, and the flexible connection betweensaid guide and the plate, all substantially as described.

4. In a wire drawing machine the combination of the bath, the rollerstherein, the stepped cone drawing roller, having tapered steps a,substantially as and for the purpose described, the draw-plates betweensaid roller and bath, and the sets of wire guide rollers b and h, allsubstantially as described.

5. In a wire drawing machine, a steppedcone drawing roller 1) havingtapered steps to substantially as and for the purpose described incombination with wire guide rollers at the side of the drawing rollerwhereby the wire is so guided as to be uniformly distributed in one ormore coils over the whole periphery of each step to so as to work or actlaterally and uniformly thereon, substantially as described.

6. In a wire drawing machine the combination of the bath,the rollerstherein,the conical stepped drawing rollers, the draw-plates betweensaid roller and bath, and the wire guide rollers 12', h substantially asdescribed; with the drum, its winding shaft, the clutch connectionbetween said shaft and drum; the wire guide sheave, and the connectionsbetween said sheave and the clutch devices, all substantially as and forthe purpose described.

7. The herein described wire drawing machine, consisting of the reel,the bath, the guide rollers therein, the stepped drawing roller, theguide rollers and draw plates intermediate the drawing roller and bath;the winding drum, its shaft, the spring plate, the devices for lockingthe drum to the shaft controlled by said plate; the wire-guide roller,and the connection between said roller and plate, all constructed andarranged substantially as and for the purpose set forth.

In witness whereof I have hereunto set my hand in presence of twowitnesses.

VALENTIN BERGMANN. Witnesses:

ANDREAS STANGL, FRANK H. MASON.

